TOTAL VOLUME:
$134.2b
24H VOL:
$130,522,377
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,438,389,636
404,028
Markets across
30,214
events
MATCHED EVENTS:
2,681
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 21, 8:04 PM EST
Polymarket
This market refers to the tennis match between Arina Bulatova and Ava Quincy Brewer in the W50 Berkeley, CA, Qualifying, originally scheduled for September 21, 2026 at 4:30PM ET. This market will resolve to 'Arina Bulatova' if Arina Bulatova advances against Ava Quincy Brewer. This market will resolve to 'Ava Quincy Brewer' if Ava Quincy Brewer advances against Arina Bulatova. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 5, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the International Tennis Federation (ITF). A consensus of credible reporting may also be used.
This market refers to the tennis match between Arina Bulatova and Ava Quincy Brewer in the W50 Berkeley, CA, Qualifying, originally scheduled for September 21, 2026 at 4:30PM ET. This market will resolve to 'Arina Bulatova' if Arina Bulatova advances against Ava Quincy Brewer. This market will resolve to 'Ava Quincy Brewer' if Ava Quincy Brewer advances against Arina Bulatova. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 5, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the International Tennis Federation (ITF). A consensus of credible reporting may also be used.
Typically, prediction market odds reflect the wisdom of the crowd and can differ from traditional sportsbook odds. Sportsbooks set initial lines based on their own analysis, potentially incorporating biases or aiming to balance action on both sides. This market, however, is driven by individuals trading based on their own research and insights. If there's a significant discrepancy, arbitrage opportunities may emerge, where traders can profit by simultaneously betting on both platforms. It’s common to see prediction markets more accurately reflect true probabilities as the event approaches.
On Polymarket, this market is priced through a continuous auction mechanism, where traders buy and sell shares representing their belief in the probability of a particular outcome. The price of a share directly corresponds to the implied probability of that outcome occurring. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more people buy shares in a specific outcome, its price increases, and the implied probability rises. Conversely, selling pressure decreases the price and probability. This dynamic pricing ensures the market reflects the collective intelligence of all participants.
This market resolves around Sep 28, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will be based on the official result of the Bulatova vs. Brewer match, as reported by the governing body or official tournament organizers. The platform will verify the outcome against these sources to determine which shares will pay out. Traders should monitor official announcements to stay informed about the resolution process and timing for this market.
Several factors could influence the trading activity and price movement in this market. Any news regarding player form, injuries, or changes in coaching strategies for either Arina Bulatova or Ava Quincy Brewer could significantly impact the odds. Unexpected announcements about match conditions or venue changes could also play a role. Public sentiment, reflected in social media discussions and expert analysis, can also drive trading volume and shift probabilities as the Sep 28, 2026 approaches. Major upsets in related matches might also influence trader behavior.